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Finding the Fourth Proportional to 2,700.90, 3,727.08 and 1,521.90

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Solution

The fourth proportional to 2,700.90, 3,727.08 and 1,521.90 is: 2,100.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,700.90 : 3,727.08 = 1,521.90 : x
  2. Step 2: Convert to fraction form
    2,700.90/3,727.08 = 1,521.90/x
  3. Step 3: Cross multiply
    2,700.90x = 3,727.08 × 1,521.90
  4. Step 4: Simplify right side
    2,700.90x = 5,672,243.05
  5. Step 5: Solve for x
    x = 5,672,243.05/2,700.90
  6. Step 6: Final answer
    x = 2,100.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.